Carbureter.



S. E. HEREN. CABBURETER. APPLICATION FILED APR. 12, EQIG.

Patented 0st. 16, 1917.

son n. HEBEN', or mans our, MONTANA.

CABBURETER.

' naaac'oa.

Specification of Letters Patent.

Patented Oct. 16, 1917.

Application filed April 12, 1916. Serial No. 90,642.

To all whom it may concern:

Be it known that I, SoL E. HEREN, a citizen of the United States, residing at Miles City, in the county of Custer and State of Montana, have invented certain new and useful Improvements in Carbureters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has for its object to provide an improved carbureter embodying novel thermosensitive means associated directly with the water coolin system of an internal combustion engine or effecting an automatic adjustment of the fuel and auxiliary air valves, thereby insuring a rich mixture when the engine is cold, as when starting, and automatically cutting down the supply of mixin fuel and simltaneously increasing the supp y of air as the engine becomes warm. 7

With this and other objects in view, the invention consists in the novel construction, combination and arrangement of parts as will be hereinafter specifically described, claimed and illustrated in the accompanying drawing, in which:

The figure represents a vertical sectional view through the improved carbureter.

Referring to the drawing in detail, wherein similar reference numerals designate corresponding parts throughout the view, the numeral 5 indicates the body or casing of the carbureter having an integral flange 6 at the upper end thereof for connection with the depending extremity of the inlet manifold 7 of the internal combustion engine (not shown). The casing or body 5 18 formed with a vertical passageway communicating with thebore of the-manifold 7 and connecting at its lower end with a free air pipe 8, having an upwardly directed inletend 9; The central portion of the body or casing 5 is formed with an integral and downwardly flaring flange 10, constituting a cover for a liquid fuel reservoir 11 of annular formation, which is supported at its lower terminal upon the adjacent end of the air pipe 8. Above the flange 10, the body 5 is formed,with a lateral hollow extension I 12, having an air inlet port 13 in the lower portion thereof in which is adapted to seat an air valve 14. A guide pin 15 is secured in the top of the hollow extension 12 and 1 projects downwardly through the port 13 and valve 14, for guiding the vertical sliding movement of the latter. nozzle 16 communicates at one end with the lower portion of the reservoir 7 and the discharge end thereof is directed upwardly within the bore of the body 5.

Cylinders 17 and 18 are supported upon the hollow extension 12 and the flange 10, respectively, and the upper portions thereof are connected by water pipes 19 and 20 with the water chamber 21 inclosing the manifold 7. If preferred, the water pipes 19 and 20 may be extended and connected directly with the water chambers surrounding the cylinders of the engine.

A thermosensitive element 22 is arranged in the cylinder 17 and is provided at one end with a screw threaded shank 23, extending through the upper end of the cylin der 17 and at its opposite end with a depending stem 24. A nut 25 is threaded upon the shank 23 and is confined between the adjacent end of the cylinder 17 and an integral angular extension 26 thereof. The lower A spraying extremity of the stem 24 is pivotally consecured to the hollow extension 12. The

ends of the levers 27 opposite the stem 24 are pivotally connected with links 29, having connection at their lower ends with a pair of plungers 30, slidably mounted in the top of the hollow extension 12 and engaged with a disk 31. A spring 32 is coiled about the guide 15 and is en aged between the disk 31 and the valve 14.- or normally retaining the latter in closed position.

The water subsequent to passing through the cylinders 17 and 18, is conducted by water outlets pipes 33 and 34 to the upper portion of the cooling radiator of the cooling system of the engine.

A thermosensitive element 35 is arranged in the cylinder 18 and is provided at one end with a screw threaded shank 36 extending exteriorly of the cylinder and through an angular extension 37 of the latter. A screw 38 is fitted upon the shank 36 and is confined between the adjacent end of the cylinder and the extension 37 for adjusting the element 35 longitudinally within the cylinder. The opposite end of the thermosensitive element 35 is connected with the stem 39 of a needle valve 40, which extends through apertures in the flange 10 and body v and terminates in the discharge end of the spraying nozzle 16.

In use, the engine is operated until it is heated to normal running temperature and then the needle valve 40 is ad usted by the nut 38 to admit the proper quantity of liquid fuel to enter the mixing chamber of the carbureter in proportion to the amount of air entering the free air pipe 8 and the port 13. Subsequent to the ad ustment of the fuel valve 40, the nut 25 is adjusted so as to cause the spring 32 to exert the proper tension upon the valve 14. With the earbureter properly adjusted the eng1ne w1ll operate efliciently under normal conditions, and when it is cold and the'water contained in the chamber 21 and the cylinders 17 and 18 is at a correspondingly low temperature the thermosensitive elements 22 and 35 contract. The contraction of the element 22 eflects a downward movement of the disk 31, thereby increasing the tension of the spring 32 upon the auxiliary air valve 14 and reducing the supply of air to the carbureter during operation of the engine. The contraction of the other element 35 effects an opening movement of the fuel controllmg valve 40, and thus insures a rich mixture when the engineis started.

After the engine has been in operatlon for a short time, the water in the cyhnders 17 and 18 is heated, thus causing the thermosensitive elements 22 and 35 to expand and effecting a closing movement of the fuel valve 40 and an upward movement of the disk 31.

What I claim is:

1. A carbureter comprising a body, means for securing said body to the manifold of an engine, an air inlet pipe connected to one end of the body, an outwardly and downwardly depending flange formed on the body, a cup-shaped member carried by said body and engaging the flange to form a fuel receptacle, an upwardly inclined nozzle formed in said body and in communication with the fuel receptacle, a needle valve slidable in the flange and body, and thermostatic means formed upon one end of the needle valve for moving said valve into and out of the nozzle.

2. A ca rbureter comprising a body, means for securin one and of said body to the manifold of an engine, an air inlet pipe connected to the other end of the body, an outwardly and downwardly depending flange formed on the body, a cup-shaped member carried by said body and engaging the flange to form a fuel receptacle, an upward inclined nozzle formed in said body and in communication with the fuel receptacle, a needle valve slidable in the flange and body, a casing carried by the flange, and thermostatic means formed upon one Laaaeoa end of the needlevalve and disposed in the casing for moving said valve into and out of the nozzle.

3. A earbureter comprising a body, means i wardly inclined nozzle formed on said body and in communication with the fuel receptacle, a needle valve slidable in the flange and body, a casing carried by the flange, an end wall closing one end of the casing, a thermostatic element formed upon one end of the valve and disposed within the casing, a screw threaded shank formed upon the thermostatic element, and extending through the end wall, and means carried by the end wall and operatively connected with the shank for adjusting the movement of tie thermostatic element.'

4. A carbureter comprising a body, means for securing said body to the manifold of an engine, an air intake pipe connected to said body, an outwardly and downwardly depending flange formed on the body, a cupshaped member carried by said body and engagingthe flange to form a fuel receptacle, an upwardly inclined nozzle formed in said body and in communication with the fuel receptacle, a needle valve slidable in the flange and bodv, a casing carried by said flange, an end wall closing one end of said casing, a thermostatic element formed upon one end of the valve and disposed within the casing, ascrewthreaded shank formed upon the thermostatic element and disposed through the end wall of the casing, an annular member formed upon the end wall and having an aperture for slidably receiving the shank, and a nut threaded upon the shank and disposed between the annular extension and the end wall for adjusting the movement of the thermostatic element.

5. A carbureter comprisinga body, means for connecting said body to the manifold of an engine, an air inlet pipe connected to said body, a fuel chamber carried by said body, a nozzle carried by said body and in communication with the fuel chamber, and thermostatic means carried by said body for controlling the amount of fuel passing through the nozzle into the body, a hollow extension formed on said body 'and having an auxiliary air inlet, a spring pressed valve normally closing said air inlet, a casing carried by said extension, a thermostatic element slidable in said casing, and means for connecting the thermostatic element with the valve for decreasing the tension of the spring thereof upon the expansion of the thermostatic element.

body, a nozzle formed on said body and in communication with the fuel chamber, means for controlling the amount of fuel through the nozzle, a hollow extension formed on said body and having an auxiliary air inlet port, a valve seating within said port, a stem carried by said valve, a disk slidable on said stem, a spring interposed between the disk and valve for normally seating the valve, a

casing carried by said extension, a thermostatic element located within said casing, a stem formed on said thermostatic element, arms pivoted within said casing and upon the extension and pivoted to the shank, links pivoted'to the free ends of the arms, plungers pivoted to the links, and engaging the disk to decrease the tension of the spring upon expansion of the thermostatic element. In testimony whereof I afiix my signature in presence of two witnesses.

' SOL E. HEREN. Witnesses:

W. BnLAsKI, W. R. CALVIN. 

